Controlling apparatus



Sept. 4, 41928. 1,682,789

J. T. JANET-TE CONTROLLING'APPARATUS Filed July 30, 1925 PLQ. I.

y 57M ILM Patented Sept. 4, 1928i.

UNITED .STATES MTIENT OFFICE.

JOHN T. JANEJITE, OF CHICGO, ILLINOIS.

i GONTROLLING APPARATUS.

' .Application flied July so, 19,23. serial No. 654,677'.

This invention relates: to controlling apparatus having certain automaticV features and adapted to regulate or control the running of a motor and more particularly to a device or apparatus of this character which is especially adapted. for use in connection with oil burners suchv as are adapted for heating boil-` ers, furnaces or the like. .In heating systems of this character it is necessary or desirable to provide means for stopping the motor in the event thatI the burner has stopped burning and oil is still flowing. The present in#- vention provides means whereby theexcess or overflow oil.` will actuate stopping mechanism tostop themotor and. thereby prevent the further pumping ofthe oil to the: burner.- The invention also includesother features and details: of' construction whichwill be described more full hereinafter.

The obJects of this invention are. toprovide an improved automatic controlling system for motors or the like.; to provide a. controlling system. having; a tank for liquid and means adapted to5 be actuated by afloat for opening and closing an electric circuit 5. to provide an overflow tank havingl a drain cock with a CAT `Figure 3 is a diagrammatic view showing the generalwiring diagram; and e Y Figuret is a view similar to Figure 3 showing a slightmodification. f

` .Theftank 5l as shown inthese drawings may be of. any desired sizeor shape and is prefere ably' provided. with a top 6 .secured thereto by means of bolts 7. This tank has an inlet S for receiving a pipe 9 which leads from: any Y source of supply that is to furnish liquid for operatingthe device. When the device isfto be used in connectionwith oil burner systems, this: pipe leads from the combustion chamber or' boli'k into which the fueloil is pumped by meansaoi a motor such as the motor indicated at 1th i Heretofo-re switches have been operatedV for' this purpose by the dow-nward movement of aV drip pan 'arranged to catch theexcess oil but these devices have been. fou-nd objectionable as articles may be placed under the 'panwhich,

prevents its movement or the. pan may be reh moved and if the pan is made so that kitl-can` not be readily removed 1t 1s difficult to pour the oil from the same when the motor is tobestarted. v

In accordance with the present invention the overflow or excess oil from theburner orE combustion chamber goes into the receptacle- 5 andactuates a'. float operated switch.VV The float ll which may be of any suitable character is shown as being formed ofV cork carries a contact ring. 12 at the lower side. Two switch termin-als i3 and 14 are-mounted in the cover 6 and are adapted to be engaged by the switch. member or contact member .12 when the float rises tothe proper position in the box. fr guide stem l5 is also arranged in the center of thebox` or receptacle for guidf` ing the float 11. This lioatfan-d its contact member are` preferably arranged sothat the contacts will be opened and closed under the Vsurface of the oilvl thereby making anoi-l switch inthe event that oil` is the `iuid ad-V mitted tothe box. It willV of course be ap parent` that the device may be actuated. by other iiuid's when used for other` purposesV and in lsuch'case the contacts: may be opened: and 'closd above the surface of .theiiuid'if de sire The fluid be withdrawn from the tank or receptacle. 5 through` a cock or faucetl havinga rotatable handlelS for opening and closing the same. The handle l8- has carn 19 mounted thereon foropening.andclosing a switch 20. A switch( blade VQlissecured at one end to a terminal 22'anditsv opposite end is adapted to engage with Va terminal 23 when in closed position. These terminals are mounted on bar 24 of insulating materia-l which 1s secured toa lug 25 on the side of the tank 5. The arrangement is such that when the faucet is closed the switch'willbeclosed lbut when the faucet is openthe switch will also be lopen this switch being' in. aA circuit The motor 10 and' its circuit aswell asA the 1 circuit of the controlling devices are shown in Figure 3. conductor 26 leads from: any.

suitable source of electricity and is connected with one terminal 27 ofthe motor l0; the

.llU

other terminal-28 is. connected by wire 29 with A with the motor or motor controlling devices.

one terminal 30 of a lswitch 31 which is preferably of the solenoid type and has a contact v switch 20. A wire 41 leads from the otherY terminal of the secondary to a resistance 42 the opposite terminal of this resistance being connected by `wire 43 with one terminal 44 of the coil 45 of the sole ioid 31. The ot ier terminal 46 of the solenoid coil is connected by wire 47 with the contact 23 of the switch 20. The wire 47 is also connected by a wire 48 with the terminal or switch member 14 in the tank 5. The wire 43 is also connected by awv'ire 49 with the terminal or switch member 13 in the tank 5.

The operation of the apparatus will be readily understood Jfrom Figure When current is supplied through the conductors 26 and 34 and the switch 2O is closed, the trans former 35 will supply current which passes Vfrom coil 39 through wire 41, resist-ance 42,l

wire`43, solenoid coil 45, wire 47, switch 2O and wire'40 back to the coil 39. 'lhis will energize the solenoid 31 causing ity to'raise the contact 32 and close the circuit between the contacts'30 and 33 thereby closing the circuit to the motor as will be readily understood. Themotor will be caused to start and will pump oil until the circuit is Aagain broken. Ii'the burner should go out and oil is admitted into the tank 5 the float 11 willbe raised until the switch member or contact ring 12 'engages the contacts 13 and 14. This will make a short circuit from wire 43 through wire 49, contact ring 12, contact 14, wire 43 to switch 20, thereby stopping or reducing the supply of the current to the solenoid 45 thereby permitting the armature 32 to drop and break the circuit between the terminals 3() and133 which will stop the motor 10. When it is desiredto .again start the system, the valve 17 is opened to draw ofi' the oil from the `tank 5 but it will be noted that the handle 18s must be turned to close the valve or cock 17 and the switch 2O in order to close the circuitvready for further operationn On account of this arrangement it is impossible to again start the burner while the valve 17 is open and consequently the tank controlling apparatus must be in'normal or proper con- Y dition in order to ystart the burner.

tricity is utilized for furnishing current at a lower voltage than the line current for actuating the controlling device. As the connections are the same as shown in Figure 3, turf ther description is not necessary.

While l have described this invention with particular reference to fuel burning systems, it will be apparent that it may be adapted for automatic controlling purposes wherever applicable, and therefore I do not wish to be limited to the particular use herein set forth, except as specified in the following claims, in which l claim: Y l

1;. ln a controlling apparatus, the combination oi a. float chamber', an electric switch adapted' to be actuated by the float in .said chamber, a motor circuit, a relay'for controlsaid motor circuit, a source of electricity, a controlling circuitv including the solenoidy of said relay, a short circuit in said control- 35 ling circuit tor short circuiting said solenoid, whichr short circuit is opened and closed by said lirst named switch, a 'switch in said cohtrolling circuit, a manually operable faucetV tor draining said chamber, and means for actuating said last named switch by the faucet whereby lthe switch will be closed when the faucet is closed and opened when the faucet is'opened. Y

2. The ycombination with a motor, ,of a. 95 source of electric supply, a circuit from the source to the. motor, a switch in said circuit,

a solenoid for actuating Ysaid switch., a circuit Yfor supplying current to said solenoid, a float chamber, a float in said chamber, a switch 100 actuated by said float, connections from the last named switch to the solenoid circuit whereby the solenoid will be shunted when the switchV vactuated by the Vfloat is closed, l' manually operable means for draining the 105 tloat chamber and controlling means actuated by said manually operable means Whereby the circuit to the motor will remain open until the manually operable means is moved to a predetermined position.`

3. The combination of a 'motor, a circuit tor supplying current'to said motor, a switch in said circuit, a solenoid actuating said switch, a source of electricity, a circuit :from said 'source tothe solenoid, aresistance in 115 said circuit, a short circuit for cutting out said solenoid, an overflow tank, avfloat in said tank, a switch actuated bythe float `for controlling the short circuit, a manually operable drain cock for said tank, and controlling 120 means actuated by the cock whereby the circuit to the motor cannot be closed except when Y the cock is closed. t v

4. The combination of a motor, a circuit y for supplying current to said motor,v a relay tor controlling said circuit, asource of-elec tric supply, a circuit from said source to the Vcoil of said relay, a tloat chamber, contacts arranged in said vlloat chamber, connections from said contacts to the last named circuit Y negarse for short circuiting the relay coil, a float in said chamber, a contact carried by said float adapted to close the circuit between the contacts in the float chamber when the float is raised, a discharge valve for said chamber,.a switch in the circuit to the relay coil and means actuated by the Valve handle whereby the last named switch will be closed when the valve is closed but will be opened when the valve is opened.

5. A controlling device comprising a receptacle, a cover for said receptacle, contacts extending downwardly through said cover, a float in said receptacle, a guide for said float,

" a contact member carried by said float and adapted to engage with the first named cone facts, a drain cock for said receptacle, a handle for said cock, an electric Switch arranged on the side of the receptacle and a cam on said handle for opening and closing the switch.

v6. In an oil burning system of the class described, having an electric circuit controlling the operation thereof, a switch located in said circuit, a safety chamber adapted to receive delivered fuel upon failure of ignition7 means` adapted to operate said lswitch and thereby stop the operation of said apparatus when a predetermined amount of fuel has entered the safety chamber, and means for draining said safety chamber operating, when in the draining position to cause the circuit to the oil burning system to be broken. Y

JOHN T.'JANETTE. 

